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products/sources/formale Sprachen/Java/Tomcat/java/jakarta/servlet/ (Apache Software Stiftung Version 11.0^©) Datei vom 10.10.2023 mit Größe 5 kB

Quelle ServletSecurityElement.java Sprache: JAVA

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jakarta.servlet;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;

import jakarta.servlet.annotation.HttpMethodConstraint;
import jakarta.servlet.annotation.ServletSecurity;

/**
* The programmatic equivalent of {@link jakarta.servlet.annotation.ServletSecurity} used to configre security
* constraints for a Servlet.
*
* @since Servlet 3.0
*/
public class ServletSecurityElement extends HttpConstraintElement {

    private final Map<String,HttpMethodConstraintElement> methodConstraints = new HashMap<>();

    /**
     * Use default HttpConstraint.
     */
    public ServletSecurityElement() {
        super();
    }

    /**
     * Use specified HttpConstraintElement.
     *
     * @param httpConstraintElement The constraint
     */
    public ServletSecurityElement(HttpConstraintElement httpConstraintElement) {
        this(httpConstraintElement, null);
    }

    /**
     * Use specific constraints for specified methods and default HttpConstraintElement for all other methods.
     *
     * @param httpMethodConstraints Method constraints
     *
     * @throws IllegalArgumentException if a method name is specified more than once
     */
    public ServletSecurityElement(Collection<HttpMethodConstraintElement> httpMethodConstraints) {
        super();
        addHttpMethodConstraints(httpMethodConstraints);
    }

    /**
     * Use specified HttpConstraintElement as default and specific constraints for specified methods.
     *
     * @param httpConstraintElement Default constraint
     * @param httpMethodConstraints Method constraints
     *
     * @throws IllegalArgumentException if a method name is specified more than once
     */
    public ServletSecurityElement(HttpConstraintElement httpConstraintElement,
            Collection<HttpMethodConstraintElement> httpMethodConstraints) {
        super(httpConstraintElement.getEmptyRoleSemantic(), httpConstraintElement.getTransportGuarantee(),
                httpConstraintElement.getRolesAllowed());
        addHttpMethodConstraints(httpMethodConstraints);
    }

    /**
     * Create from an annotation.
     *
     * @param annotation Annotation to use as the basis for the new instance
     *
     * @throws IllegalArgumentException if a method name is specified more than once
     */
    public ServletSecurityElement(ServletSecurity annotation) {
        this(new HttpConstraintElement(annotation.value().value(), annotation.value().transportGuarantee(),
                annotation.value().rolesAllowed()));

        List<HttpMethodConstraintElement> l = new ArrayList<>();
        HttpMethodConstraint[] constraints = annotation.httpMethodConstraints();
        if (constraints != null) {
            for (HttpMethodConstraint constraint : constraints) {
                HttpMethodConstraintElement e = new HttpMethodConstraintElement(constraint.value(),
                        new HttpConstraintElement(constraint.emptyRoleSemantic(), constraint.transportGuarantee(),
                                constraint.rolesAllowed()));
                l.add(e);
            }
        }
        addHttpMethodConstraints(l);
    }

    /**
     * Obtain the collection of security constraints configured for specific methods.
     *
     * @return The security constraints for specific methods
     */
    public Collection<HttpMethodConstraintElement> getHttpMethodConstraints() {
        Collection<HttpMethodConstraintElement> result = new HashSet<>(methodConstraints.values());
        return result;
    }

    /**
     * Obtain the collection HTTP methods for which security constraints have been defined.
     *
     * @return The names of the HTTP methods
     */
    public Collection<String> getMethodNames() {
        Collection<String> result = new HashSet<>(methodConstraints.keySet());
        return result;
    }

    private void addHttpMethodConstraints(Collection<HttpMethodConstraintElement> httpMethodConstraints) {
        if (httpMethodConstraints == null) {
            return;
        }
        for (HttpMethodConstraintElement constraint : httpMethodConstraints) {
            String method = constraint.getMethodName();
            if (methodConstraints.containsKey(method)) {
                throw new IllegalArgumentException("Duplicate method name: " + method);
            }
            methodConstraints.put(method, constraint);
        }
    }
}

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